-
Application of Pieris rapae granulosis virus insecticide in vegetable production
Pieris rapae granulosis virus, trade names: Yangkang, Wuzhou No. 1, Pieris rapae virus, Wuda Oasis Precision Chongke, common name: Pieris rapae granulosis virus, main formulation is concentrated powder, is a live virus insecticide, processed from the bodies of insects killed by Pieris rapae granulosis virus infection, belongs to low-toxicity insecticides, only against...
-
Over-application of phosphate fertilizer causes many harms, do you know these dangers?
1. Apply according to the soil. Soil conditions are closely related to the effectiveness of phosphate fertilizer. On soils with low organic matter and low available phosphorus content, applying phosphate fertilizer to the vast majority of crops can increase yields, therefore, phosphate fertilizer should be allocated mainly to soils with low organic matter content and phosphorus deficiency, so as to give full play to its fertilizer efficiency. Such as red soil dryland, yellow mud field, ...
-
Scientific application methods and technical key points for potash fertilizer
Potassium is one of the three essential fertilizer elements. Many vegetables often require more potassium than nitrogen and phosphorus; well-grown vegetables contain potassium at 2.5%-7% of their dry matter, higher than their nitrogen and phosphorus content. Most vegetables absorb more potassium than nitrogen; for example, the nitrogen-to-potassium ratio absorbed by cucumber is 1:(1.5-1.7), by pumpkin is 1:2.1, and by tomato is 1:...
-
Application Methods of Potassium Fertilizer in Vegetable Cultivation
There are many types of potassium fertilizer, and different types have different application methods. Commonly used potassium fertilizers include potassium chloride, potassium sulfate, potassium-magnesium fertilizer and plant ash. Potassium chloride and potassium sulfate are physiologically acidic fertilizers and should be applied together with lime and organic fertilizer. For chlorine-sensitive crops such as potatoes, potassium chloride and potassium-magnesium fertilizer with high chlorine content should not be applied...
-
Low potassium fertilizer application rates lead to reduced crop yields
Foliar feeding is a fertilization method in which a diluted solution of chemical fertilizers or trace elements is sprayed onto the leaves and absorbed and utilized by the plant through the leaf stomata, so it is also called topdressing outside the roots. The advantages of topdressing outside the roots are: small dosage, rapid and significant fertilizer effect, the fertilizer is not fixed by the soil and is not affected by the absorption function of the root system...
-
Sisal has high economic value and extremely wide uses, and is the hard fiber with the largest application volume in the world.
Sisal, also called pineapple hemp, is the hard fiber with the largest application volume and the widest range in the world today, and is mainly grown in Africa, Asia and other places. World sisal import and export trade is growing continuously, but China's domestically produced sisal fiber still cannot meet...
-
Detailed Explanation of Fertilizer Types and Application Methods (Part 6)
Achievement of Shandong Agricultural University: The fertilizer coating controlled-release technology involves spraying a uniform controlled-release film onto the surface of crop-specific compound fertilizer or urea granules. Its core technology lies in the film material and corresponding additives. By adjusting the formula, the number and size of pores on the film can be set to control nutrient release. Controlled-release fertilizer...
-
Correct Application Methods and Key Spraying Points for Foliar Fertilizers
1. Different foliar fertilizers have different application concentrations; higher is not always better. 2. Different crops and different growth stages respond differently to foliar fertilizers. 3. Different crops react differently to foliar fertilizers. 4. How well a foliar fertilizer dissolves and its dilution concentration greatly affect the spraying results...
-
Organic fertilizer application requires careful attention; the same fertilizer can produce very different results
Frost's Descent (Shuangjiang) brings the breath of early winter. Frost's Descent falls in the transition period between autumn and winter; as it arrives, the weather fluctuates considerably, gradually turning colder and frost beginning to form. On the land north of the Yellow River, grass and tree leaves turn yellow and fall, and hibernating insects lower their heads in their burrows and enter a state of dormancy; while in the middle and lower reaches of the Yangtze River and beyond...
-
Application Methods and Technical Key Points of High-Efficiency Organic Fertilizer
I. How to Apply High-Efficiency Organic Fertilizer to Vegetables 1. Application Rate: According to the nutrient requirements of various vegetable crops, apply 60-100 kg per mu as base fertilizer for each crop of vegetables. Baosheng High-Efficiency Organic Fertilizer is mild in nature, and applying more is unlikely to cause fertilizer burn; for vegetables, melons and fruits with high economic value or high yield, the application rate may be increased by 20-50%. Baosheng...
条件筛选